Year	% of cohort
1960	57.94528441649429
1961	58.21174907453039
1962	57.89844326400396
1963	58.846857693705665
1964	59.696487763757865
1965	59.39066860135941
1966	59.47711604022143
1967	58.93928753591829
1968	58.8509090587351
1969	57.91937164987361
1970	58.155074223540495
1971	58.19254161767546
1972	58.60476755335392
1973	58.67424569537103
1974	58.76827158546753
1975	58.12172285222092
1976	57.87674980925905
1977	57.50517357391445
1978	57.32920084638076
1979	56.8462870060069
1980	56.56610226062836
1981	57.101190113007284
1982	57.60368060215032
1983	57.34263430678426
1984	56.865600990292364
1985	57.6255936931594
1986	60.01065968534438
1987	59.96168562389504
1988	59.66396919524136
1989	59.49410189959867
1990	58.87609253702577
1991	58.10898799394586
1992	56.21840145245798
1993	53.69199226364849
1994	52.90885116130079
1995	52.97786689034589
1996	54.61408725250461
1997	55.969920053737646
1998	56.887712895846825
1999	55.61047743335953
2000	55.71089860137982
2001	56.05153121857112
2002	55.83044279842435
2003	56.002530688074316
2004	56.6840094103284
2005	56.96188960292968
2006	58.708366987996264
2007	59.901253235229795
2008	60.56304375812738
2009	61.88185105553418
2010	62.55635010877078
2011	63.71615700217954
2012	64.66555102559147
2013	65.64677249132231
2014	66.38895670115194
2015	67.35967329721154
2016	68.41168399891988
2017	69.66789496995045
2018	70.10386214982576
2019	70.86443784132129
2020	66.8857159460132
2021	65.17888941527522
2022	66.35768841879442